JP4616165B2 - Fuel supply pipe structure in the two fuel injection valve type throttle body - Google Patents
Fuel supply pipe structure in the two fuel injection valve type throttle body Download PDFInfo
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- JP4616165B2 JP4616165B2 JP2005372582A JP2005372582A JP4616165B2 JP 4616165 B2 JP4616165 B2 JP 4616165B2 JP 2005372582 A JP2005372582 A JP 2005372582A JP 2005372582 A JP2005372582 A JP 2005372582A JP 4616165 B2 JP4616165 B2 JP 4616165B2
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- 239000000446 fuel Substances 0.000 title claims description 256
- 238000002347 injection Methods 0.000 title claims description 101
- 239000007924 injection Substances 0.000 title claims description 101
- 238000003780 insertion Methods 0.000 claims description 37
- 230000037431 insertion Effects 0.000 claims description 37
- 230000001154 acute effect Effects 0.000 claims description 8
- 238000011144 upstream manufacturing Methods 0.000 claims description 4
- 238000002485 combustion reaction Methods 0.000 description 6
- 239000002828 fuel tank Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
- F02M69/04—Injectors peculiar thereto
- F02M69/042—Positioning of injectors with respect to engine, e.g. in the air intake conduit
- F02M69/043—Positioning of injectors with respect to engine, e.g. in the air intake conduit for injecting into the intake conduit upstream of an air throttle valve
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
- F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
- F02D9/10—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
- F02D9/1035—Details of the valve housing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
- F02M69/04—Injectors peculiar thereto
- F02M69/042—Positioning of injectors with respect to engine, e.g. in the air intake conduit
- F02M69/044—Positioning of injectors with respect to engine, e.g. in the air intake conduit for injecting into the intake conduit downstream of an air throttle valve
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
- F02M69/46—Details, component parts or accessories not provided for in, or of interest apart from, the apparatus covered by groups F02M69/02 - F02M69/44
- F02M69/462—Arrangement of fuel conduits, e.g. with valves for maintaining pressure in the pipes after the engine being shut-down
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
- F02M69/46—Details, component parts or accessories not provided for in, or of interest apart from, the apparatus covered by groups F02M69/02 - F02M69/44
- F02M69/462—Arrangement of fuel conduits, e.g. with valves for maintaining pressure in the pipes after the engine being shut-down
- F02M69/465—Arrangement of fuel conduits, e.g. with valves for maintaining pressure in the pipes after the engine being shut-down of fuel rails
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Description
本発明は、スロットルボデーに取着された燃料噴射弁より内燃機関に向けて燃料を噴射供給する燃料噴射装置に関し、そのうち特に単一のスロットルボデーに第1燃料噴射弁と第2燃料噴射弁とが取着される2燃料噴射弁型のスロットルボデーにおける燃料供給管構造に関する。 The present invention relates to a fuel injection device that injects fuel from a fuel injection valve attached to a throttle body toward an internal combustion engine, and in particular, a first fuel injection valve and a second fuel injection valve are provided in a single throttle body. The present invention relates to a fuel supply pipe structure in a two-fuel injection valve type throttle body.
従来の2燃料噴射弁を備えるスロットルボデーにおける燃料供給管構造は図2に開示される。
30は内部を吸気通路31が側方に貫通して穿設されたスロットルボデーであり、吸気通路31は絞り弁軸32に取着された絞り弁33によって開閉され、絞り弁33の上流側には副絞り弁34が副絞り弁軸35に取着されて吸気通路31を開閉する。
前記絞り弁33は図示せぬ内燃機関に向かう空気量を制御するもので、副絞り弁34は絞り弁33に向かう空気量を制御する。
J1は、絞り弁33より下流側の吸気通路31a内に燃料を噴射供給する第1燃料噴射弁であり、この第1燃料噴射弁J1は内燃機関の低開度運転時及び中開度運転時における燃料供給領域を負担する。
又、第1燃料噴射弁J1の先端J1aは、スロットルボデー30の第1挿入孔30aに挿入され、後端J1bは第1燃料分配管36の第1燃料噴射弁挿入孔36aに挿入され、第1燃料噴射弁J1はスロットルボデー30とスロットルボデー30にビス41によって螺着された第1燃料分配管36とによって挟持される。
このとき、第1燃料噴射弁J1の長手軸心線Z−Zは、吸気通路31の長手軸心線X−Xに対して鋭角の交差角(A度)をもって配置される。
又、前記第1燃料分配管の内部には、第1燃料噴射弁挿入孔36aに連なる第1燃料流入路36bが穿設されるもので、この第1燃料流入路36bは図示せぬ燃料ポンプ等の燃料源に第1燃料配管40をもって接続される。
J2は、絞り弁33より上流側の吸気通路31b内に燃料を噴射供給する第2燃料噴射弁であり、この第2燃料噴射弁J2は、内燃機関の中、高開度運転時における燃料供給領域を負担する。
又、第2燃料噴射弁J2の先端J2aは、スロットルボデー30の第2挿入孔30bに挿入され、後端J2bは、第2燃料分配管37の第2燃料噴射弁挿入孔37aに挿入され、第2燃料噴射弁J2は、スロットルボデー30とスロットルボデー30にビス43にて螺着された第2燃料分配管37とによって挟持される。
このとき第2燃料噴射弁J2の長手軸心線Y−Yと吸気通路31の長手軸心線X−Xとは鋭角の交差角B度をもって配置される。
又、前記第2燃料分配管37の内部には、第2燃料噴射弁挿入孔37aに連なる第2燃料流入路37bが穿設されるもので、この第2燃料流入路37bは、図示せぬ燃料ポンプ等の燃料源に第2燃料配管42をもって接続される。
ここで、第1燃料噴射弁J1と吸気通路31との交差角A度は、第2燃料噴射弁J2と吸気通路31との交差角B度より小さく設定される。
すなわち交差角A度<交差角B度である。
以上の如く、第1燃料噴射弁J1の交差角A度を第2燃料噴射弁J2の交差角B度より小さく設定するのは、機関の低、中開度運転時において、第1燃料噴射弁J1より噴射される燃料を吸気通路31内を流れる空気流れに沿ってできる限り平行状態にて機関に供給する為に行なわれる。
一方、第2燃料噴射弁J2の交差角B度を第1燃料噴射弁J1の交差角A度より大きく設定するのは、第2燃料噴射弁J2が図において右方へ突出することを抑止してスロットルボデー全体を小型化する為に行なわれるもので、このように第2燃料噴射弁J2の交差角B度を大きく設定しても、絞り弁の特に高開度運転時にあっては、吸気通路31内を流れる空気流れが速いことから噴射された燃料は良好に空気流れに沿って流れることができる。
A fuel supply pipe structure in a throttle body having a conventional two-fuel injection valve is disclosed in FIG.
The
J1 is a first fuel injection valve that injects fuel into the intake passage 31a on the downstream side of the
The front end J1a of the first fuel injection valve J1 is inserted into the
At this time, the longitudinal axis ZZ of the first fuel injection valve J1 is arranged with an acute crossing angle (A degree) with respect to the longitudinal axis XX of the
A first
J2 is a second fuel injection valve that injects and supplies fuel into the
Further, the front end J2a of the second fuel injection valve J2 is inserted into the
At this time, the longitudinal axis YY of the second fuel injection valve J2 and the longitudinal axis XX of the
In addition, a second
Here, the intersection angle A degree between the first fuel injection valve J1 and the
That is, the intersection angle A degree <the intersection angle B degree.
As described above, the crossing angle A degree of the first fuel injection valve J1 is set smaller than the crossing angle B degree of the second fuel injection valve J2. The first fuel injection valve is operated during low and medium opening operation of the engine. This is performed in order to supply the fuel injected from J1 to the engine as parallel as possible along the air flow flowing in the
On the other hand, setting the crossing angle B degree of the second fuel injection valve J2 to be larger than the crossing angle A degree of the first fuel injection valve J1 prevents the second fuel injection valve J2 from protruding rightward in the drawing. Thus, even if the crossing angle B degree of the second fuel injection valve J2 is set large as described above, the intake valve is inhaled when the throttle valve is operated particularly at a high opening. Since the air flow through the
かかる従来の2燃料噴射弁を備えるスロットルボデーによると、第1燃料分配管36の第1燃料流入路36bが図示せぬ燃料ポンプ吐出路に第1燃料配管40によって接続され、第2燃料分配管37の第2燃料流入路37bが前記ポンプ吐出路に第2燃料配管42によって接続される。
而して、燃料ポンプによって昇圧された燃料の一部は、第1燃料配管40を介して第1燃料分配管36に装着された第1燃料噴射弁J1に供給され、又燃料ポンプによって昇圧された燃料の他の一部は、第2燃料配管42を介して第2燃料分配管37に取着された第2燃料噴射弁J2に供給される。
以上の如き従来の燃料供給管構造によると、スロットルボデー30と燃料ポンプとの間に2本の長い第1及び第2燃料配管を必要とすることになる。
これは特に燃料ポンプが機関より離れた位置にある燃料タンク内、あるいは燃料タンクの近傍に配置されること、並びにスロットルボデー30が内燃機関の近傍に配置されることによる。
以上によると、内燃機関、スロットルボデー30、燃料タンクが直接大気に露出されて配置される二輪車等にあっては、2本の燃料配管40、42もまた直接大気に露出されるもので外観性が損なわれるとともに収納空間の狭い二輪車等において2本の長い燃料配管の設計的自由度が制限される。
又、燃料分配管として第1、第2燃料分配管36、37が用意され、それらが別々にスロットルボデー30に螺着されるもので、これによると螺着作業工数が増加する。
According to the conventional throttle body including the two fuel injection valves, the first
Thus, a part of the fuel boosted by the fuel pump is supplied to the first fuel injection valve J1 attached to the first
According to the conventional fuel supply pipe structure as described above, two long first and second fuel pipes are required between the
This is particularly the fuel pump is disposed in the vicinity of the fuel tank or the fuel tank is located away from the engine, as well as by the this
According to the above, in the two-wheeled vehicle in which the internal combustion engine, the
Further, first and second
本発明は、前記不具合に鑑み成されたもので、燃料ポンプと燃料分配管とを連結する長い燃料配管を従来の2本から1本とし、二輪車の外観性を向上するとともに燃料配管の設計的自由度を向上して二輪車への搭載性を高めること、並びに燃料分配管を単一としてスロットルボデーに対する装着性の向上を図ることのできる2燃料噴射弁型のスロットルボデーにおける燃料供給管構造を提供することにある。 The present invention has been made in view of the above-mentioned problems. The long fuel pipe connecting the fuel pump and the fuel distribution pipe is changed from the conventional two to one to improve the appearance of the motorcycle and to design the fuel pipe. to improve the degree of freedom to enhance the mountability to motorcycles, as well as provide a fuel supply pipe structure in a two fuel injection valve type throttle body capable of improving the wearability for the throttle body and the fuel distribution pipe as a single There is to do.
本発明は、前記目的達成のために、吸気通路を開閉する絞り弁より下流側の吸気通路に向けて、吸気通路の長手軸心線に対して鋭角の交差角をもって配置される第1燃料噴射弁と、絞り弁より上流側の吸気通路に向けて、前記交差角より大なる鋭角の交差角をもって配置される第2燃料噴射弁を備える、2燃料噴射弁型のスロットルボデーにおいて、
第1燃料噴射弁の後端部に挿入接続される接続管部と、この接続管部の後端から前記第2燃料噴射弁の長手軸芯線と平行するように屈曲して延びる挿入管部とよりなる単一の燃料接続管、並びに
互いに平行に配置されて前記挿入管部および第2燃料噴射弁の後端部にそれぞれ挿入接続される接続孔および第2燃料噴射弁挿入孔と、これら接続孔および第2燃料噴射弁挿入孔に連通するとともに燃料源に接続される単一の燃料分配路とを有する単一の燃料分配管よりなり、
燃料源から前記燃料分配管に供給される燃料を、第1燃料噴射弁には前記燃料接続管を通して供給するとともに、第2燃料噴射弁には直接供給するようにしたことを特徴とする。
In order to achieve the above object , the present invention provides a first fuel injection disposed at an acute crossing angle with respect to the longitudinal axis of the intake passage toward the intake passage downstream of the throttle valve that opens and closes the intake passage. A two-fuel injection valve type throttle body comprising a valve and a second fuel injection valve disposed at an acute crossing angle greater than the crossing angle toward the intake passage upstream of the throttle valve;
A connecting pipe portion inserted and connected to a rear end portion of the first fuel injection valve; an insertion pipe portion bent and extended from the rear end of the connection pipe portion so as to be parallel to the longitudinal axis of the second fuel injection valve; A single fuel connection pipe comprising:
A connection hole and a second fuel injection valve insertion hole, which are arranged in parallel to each other and inserted and connected to the rear end portion of the insertion pipe part and the second fuel injection valve, respectively. A single fuel distribution pipe having a single fuel distribution path in communication and connected to a fuel source ;
The fuel supplied from the fuel source to the fuel distribution pipe is supplied to the first fuel injection valve through the fuel connection pipe and is directly supplied to the second fuel injection valve .
本発明の2燃料噴射弁型のスロットルボデーにおける燃料供給管構造によると、吸気通路の長手軸心線に対して鋭角の交差角をもって配置される第1燃料噴射弁と、前記交差角より大なる交差角をもって配置される第2燃料噴射弁に対して、それぞれ単一の燃料分配管および燃料接続管が用意され、第1燃料噴射弁は燃料接続管を介して燃料分配管に接続され、第2燃料噴射弁は直接的に燃料分配管に接続され、燃料ポンプによって昇圧された燃料が燃料分配管に供給されると、その一部が燃料接続管を通して第1燃料噴射弁に供給されるとともに、他部が直接第2燃料噴射弁に供給される。
本発明によれば、それぞれ単一の燃料分配管および燃料接続管を用意されればよいので、燃料分配管のスロットルボデーへの螺着作業を簡単に行なうことができる。
又、燃料分配管が単一であることから燃料分配管の配置の自由度を大きく向上できる。
又、燃料分配管は単一の燃料配管をもって燃料ポンプに接続されればよいので、前記燃料配管の自由度及び燃料配管の接続作業を簡単に行なうことができ、更には外観をスッキリとまとめることができる。
According to the fuel supply pipe structure in the two-fuel-injection-valve type throttle body of the present invention, the first fuel-injection valve arranged with an acute crossing angle with respect to the longitudinal axis of the intake passage is greater than the crossing angle. A single fuel distribution pipe and a fuel connection pipe are prepared for each of the second fuel injection valves arranged at an intersection angle , and the first fuel injection valve is connected to the fuel distribution pipe via the fuel connection pipe. The fuel injection valve is directly connected to the fuel distribution pipe. When fuel boosted by the fuel pump is supplied to the fuel distribution pipe, a part of the fuel injection valve is supplied to the first fuel injection valve through the fuel connection pipe. other portions are fed directly to the second fuel injection valve.
According to the present invention, since it is only necessary to prepare a single fuel distribution pipe and a fuel connection pipe , respectively , the screwing operation of the fuel distribution pipe to the throttle body can be easily performed.
Further, since the fuel distribution pipe is single, the degree of freedom of arrangement of the fuel distribution pipe can be greatly improved.
Further, since the fuel distribution pipe only needs to be connected to the fuel pump with a single fuel pipe, the degree of freedom of the fuel pipe and the connection work of the fuel pipe can be easily performed, and the appearance can be clearly organized. Can do.
以下、本発明になる2燃料噴射弁型のスロットルボデーにおける燃料供給管構造の一実施例について図1により説明する。
尚、図2に同一構造のものは、同一符号を使用して説明を省略する。
1は燃料分配管であり以下により形成される。
1aは燃料分配管1の内部に穿設された燃料分配路であり、この燃料分配路1aは燃料配管2をもって図示せぬ燃料ポンプに接続され、燃料ポンプによって昇圧された燃料が燃料配管2を介して燃料分配路1a内に供給される。
又、燃料分配管1の端部1b(図1において上端)には、第2燃料噴射弁挿入孔1cの一端が開口して穿設され、他端は燃料分配路1a内に開口する。
そして、この第2燃料噴射弁挿入孔1cの長手軸心線は第2燃料噴射弁J2の長手軸心線Y−Yと同芯に形成される。
更に燃料分配管1の端部1bには、接続孔1dの一端が開口して穿設され、他端は燃料分配路1a内に開口する。
そして、この接続孔1dの長手軸心線は前記第2燃料噴射弁挿入孔1cの長手軸心線と平行に形成される。
いいかえると接続孔1dは第2燃料噴射弁J2の長手軸心線Y−Yと平行に形成される。以上をまとめてみると、単一の燃料分配管1には、燃料分配路1aから一端1bに向けて第2燃料噴射弁挿入孔1cと接続孔1dとが互いに平行に、且つ第2燃料噴射弁J2の長手軸心線Y−Yに沿って穿設される。
An embodiment of a fuel supply pipe structure in a two-fuel injection valve type throttle body according to the present invention will be described below with reference to FIG.
In addition, the thing of the same structure in FIG. 2 uses the same code | symbol, and abbreviate | omits description.
1 is a fuel distribution pipe, which is formed as follows.
Reference numeral 1a denotes a fuel distribution path formed in the fuel distribution pipe 1. The fuel distribution path 1a is connected to a fuel pump (not shown) through a
Further, one end of the second fuel injection valve insertion hole 1c is opened at the end 1b (upper end in FIG. 1) of the fuel distribution pipe 1, and the other end opens into the fuel distribution path 1a.
The longitudinal axis of the second fuel injection valve insertion hole 1c is formed concentrically with the longitudinal axis YY of the second fuel injection valve J2.
Further, one end of the connection hole 1d is opened at the end 1b of the fuel distribution pipe 1, and the other end is opened into the fuel distribution path 1a.
The longitudinal axis of the connection hole 1d is formed in parallel with the longitudinal axis of the second fuel injection valve insertion hole 1c.
In other words, the connection hole 1d is formed in parallel with the longitudinal axis YY of the second fuel injection valve J2. In summary, in the single fuel distribution pipe 1, the second fuel injection valve insertion hole 1 c and the connection hole 1 d are parallel to each other from the fuel distribution path 1 a toward the one end 1 b , and the second fuel injection is performed. It is drilled along the longitudinal axis YY of the valve J2.
3は燃料接続管であり、第1燃料噴射弁J1の長手軸心線X−Xと同芯にして上端3aに向けて開口する第1燃料噴射弁挿入孔3bを有する接続管部3Aと、この接続管部3Aの下端から屈曲して第2燃料噴射弁J2の長手軸心線Y−Yと平行に配置され、且つ燃料分配管1の接続孔1d内に挿入される挿入管部3dとよりなっている。その挿入管部(3d)は、第1燃料噴射弁挿入孔3bの下端から挿入管部3dの下端3cに向けて開口する接続流路3eが形成される。上記挿入管部3dと、第2燃料噴射弁J2の後端部J2bとは、前記第2燃料噴射弁挿入孔1cと接続孔1dに対応して、互いに平行に配置される。
3 is a fuel connection pipe, a
次に燃料分配管3のスロットルボデー30への取着及び燃料噴射弁J1、J2の支持について説明する。
第1に第1燃料噴射弁J1の後端部J1bを、燃料接続管3の第1燃料噴射弁挿入孔3b内に挿入するもので、このとき第1燃料噴射弁J1の長手軸心線Z−Zは吸気通路30の長手軸心線X−Xに対して鋭角の交差角(A度)をもって配置され、その先端部J1aがスロットルボデー30の第1挿入孔30aに挿入配置され、後端部J1bは燃料接続管3の第1燃料噴射弁挿入孔3bに挿入配置される。
第2に燃料分配管1の端部1bに開口する第2燃料噴射弁挿入孔1c内に第2燃料噴射弁J2の後端部J2bを挿入配置するもので、これによると第2燃料噴射弁J2の長手軸心線Y−Yは、吸気通路30の長手軸心線X−Xに対して、前記交差角(A度)より大なる交差角(B度)をもって配置され、その先端部J2aがスロットルボデー30の第2挿入孔30bに挿入配置され、後端部J2bは、燃料分配管1の第2燃料噴射弁挿入孔1cに挿入配置される。
又、燃料接続管3の挿入管部3dは燃料分配管1の接続孔1d内に挿入配置される。
第3に燃料分配管1より側方にのびる鍔部1eをビス4にてスロットルボデー30に螺着する。
以上によると、燃料分配管1はビス4によってスロットルボデー30に螺着固定されるもので、第1燃料噴射弁J1は燃料分配管1、燃料接続管3とスロットルボデー30とにより挟持され、第2燃料噴射弁J2は燃料分配管1とスロットルボデー30とにより挟持される。
Next, attachment of the fuel distribution pipe 3 to the
First, the rear end portion J1b of the first fuel injection valve J1 is inserted into the first fuel injection
Secondly, the rear end portion J2b of the second fuel injection valve J2 is inserted and disposed in the second fuel injection valve insertion hole 1c opened to the end portion 1b of the fuel distribution pipe 1. According to this, the second fuel injection valve The longitudinal axis YY of J2 is arranged with a crossing angle (B degree) greater than the crossing angle (A degree) with respect to the longitudinal axis XX of the
Further, the insertion pipe portion 3 d of the fuel connection pipe 3 is inserted and disposed in the connection hole 1 d of the fuel distribution pipe 1.
Thirdly, a flange 1 e extending laterally from the fuel distribution pipe 1 is screwed to the
According to the above, the fuel distribution pipe 1 is screwed and fixed to the
そして、燃料ポンプによって昇圧された燃料が燃料分配管1の燃料分配路1aに供給され、燃料分配路1a内の燃料の一部が、第2燃料噴射弁挿入孔1cを介して第2燃料噴射弁J2に供給され、燃料分配路1a内の燃料の他部が、接続孔1d、燃料接続管3の接続流路3e、第1燃料噴射弁挿入孔3bを介して第1燃料噴射弁J1に供給される。
Then, the fuel boosted by the fuel pump is supplied to the fuel distribution path 1a of the fuel distribution pipe 1, and a part of the fuel in the fuel distribution path 1a is injected into the second fuel via the second fuel injection valve insertion hole 1c. The other part of the fuel in the fuel distribution passage 1a is supplied to the valve J2 and passes through the connection hole 1d, the
かかる燃料供給管構造によると、第1燃料噴射弁J1は、燃料接続管3を介して燃料分配管1と接続され、第2燃料噴射弁J2は直接的に燃料分配管1と接続されたので、吸気通路31の長手軸心線X−Xに対して鋭角の交差角A度をもって配置される第1燃料噴射弁J1と、前記交差角A度より大なる交差角B度をもって配置される第2燃料噴射弁J2に対して、それぞれ単一の燃料分配管1および燃料接続管3が用意されればよい。
このように燃料分配管1が単一でよいことは、燃料分配管1と燃料ポンプとを流路接続する燃料配管2は一本用意すればよいもので、これによって燃料配管2の接続作業性を向上できるとともに燃料配管2の配管の自由度を向上でき、更には、その外観性を向上できる。
又、燃料分配管2とスロットルボデー30との取りつけは、一回の取りつけ作業をもって完了できるので燃料分配管2の取付け作業性を向上できる。
上記において、燃料分配管1及び燃料配管2が単一でよいことは、特にスロットルボデー30が直接大気に露出して配置されるとともに自動車に比較して収納空間が狭く限定される二輪車において、特に効果的である。
又、燃料噴射弁J1、J2、燃料分配管1のメンテナンス作業時にあっては、単一の燃料分配管をスロットルボデー30より外せばよいのでその作業性を大きく向上できたものである。
According to this fuel supply pipe structure, the first fuel injection valve J1 is connected to the fuel distribution pipe 1 via the fuel connection pipe 3, and the second fuel injection valve J2 is directly connected to the fuel distribution pipe 1. The first fuel injection valve J1 arranged with an acute crossing angle A degree with respect to the longitudinal axis XX of the
The fact that the fuel distribution pipe 1 may be single in this way is that only one
Moreover, since the attachment of the
In the above, the fuel distribution pipe 1 and the
Further, during the maintenance work of the fuel injection valves J1, J2 and the fuel distribution pipe 1, it is only necessary to remove the single fuel distribution pipe from the
尚、本実施例は単一のスロットルボデーに採用したものであるがスロットルボデーが側方に複数配置される多連スロットルボデーにも容易に実施できる。
この際、単一の燃料分配管1には、多連スロットルボデーに沿って側方に長い燃料分配路が穿設され、各スロットルボデーに装着される第1、第2燃料噴射弁に向けてそれぞれ接続孔、第2燃料噴射弁挿入孔を開口して穿設すればよい。
Although this embodiment is adopted for a single throttle body, it can be easily implemented in a multiple throttle body in which a plurality of throttle bodies are arranged on the side.
At this time, a single fuel distribution pipe 1 is provided with a long fuel distribution passage on the side along the multiple throttle bodies, toward the first and second fuel injection valves mounted on each throttle body. What is necessary is just to open and open a connection hole and a 2nd fuel injection valve insertion hole, respectively .
1 燃料分配管
1a 燃料分配路
1b 端部
1c 第2燃料噴射弁挿入孔
1d 接続孔
3 燃料接続管
3A 接続管部
3b 第1燃料噴射弁挿入孔
3d 挿入管部
3e 接続流路
J1 第1燃料噴射弁
J2 第2燃料噴射弁
DESCRIPTION OF SYMBOLS 1 Fuel distribution pipe 1a Fuel distribution path 1b End part 1c 2nd fuel injection valve insertion hole 1d Connection hole 3 Fuel connection pipe
3A Connection pipe
3b 1st fuel injection valve insertion hole
3d
Claims (1)
第1燃料噴射弁(J1)の後端部(J1b)に挿入接続される接続管部(3A)と、この接続管部(3A)の後端から前記第2燃料噴射弁(J2)の長手軸芯線(Y−Y)と平行するように屈曲して延びる挿入管部(3d)とよりなる単一の燃料接続管(3)、並びに
互いに平行に配置されて前記挿入管部(3d)および第2燃料噴射弁(J2)の後端部(J2b)にそれぞれ挿入接続される接続孔(1d)および第2燃料噴射弁挿入孔(1c)と、これら接続孔(1d)および第2燃料噴射弁挿入孔(1c)に連通するとともに燃料源に接続される単一の燃料分配路(1a)とを有する単一の燃料分配管(1)よりなり、
燃料源から前記燃料分配管(1)に供給される燃料を、第1燃料噴射弁(J1)には前記燃料接続管(3)を通して供給するとともに、第2燃料噴射弁(J2)には直接供給するようにしたことを特徴とする、2燃料噴射弁型のスロットルボデーにおける燃料供給管構造。 An acute crossing angle (A ) with respect to the longitudinal axis (XX ) of the intake passage (31) toward the intake passage (31) downstream from the throttle valve (33 ) that opens and closes the intake passage (31). ) And the first fuel injection valve (J1) and the intake passage (31) on the upstream side of the throttle valve (33) with a crossing angle (B) larger than the crossing angle (A). In a two-fuel injection valve type throttle body comprising a second fuel injection valve (J2)
A connecting pipe part (3A) inserted and connected to the rear end part (J1b) of the first fuel injection valve (J1), and the length of the second fuel injection valve (J2) from the rear end of the connecting pipe part (3A) A single fuel connection pipe (3) comprising an insertion pipe portion (3d) bent and extended so as to be parallel to the axial line (Y-Y), and
A connection hole (1d) and a second fuel injection valve insertion hole (1c) which are arranged in parallel with each other and inserted and connected to the rear end part (J2b) of the insertion pipe part (3d) and the second fuel injection valve (J2), respectively. ) And a single fuel distribution pipe (1) that communicates with the connection hole (1d) and the second fuel injection valve insertion hole (1c) and is connected to the fuel source (1a). )
Fuel supplied from the fuel source to the fuel distribution pipe (1) is supplied to the first fuel injection valve (J1) through the fuel connection pipe (3) and directly to the second fuel injection valve (J2). A fuel supply pipe structure in a two-fuel injection valve type throttle body, characterized by being supplied.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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JP2005372582A JP4616165B2 (en) | 2005-12-26 | 2005-12-26 | Fuel supply pipe structure in the two fuel injection valve type throttle body |
EP20060124464 EP1801412B1 (en) | 2005-12-26 | 2006-11-21 | Fuel supply pipe structure in two fuel injection valve type throttle body |
DE200660006783 DE602006006783D1 (en) | 2005-12-26 | 2006-11-21 | Fuel supply line structure for two injectors of a throttle element |
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JP2005372582A JP4616165B2 (en) | 2005-12-26 | 2005-12-26 | Fuel supply pipe structure in the two fuel injection valve type throttle body |
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JP2007170349A JP2007170349A (en) | 2007-07-05 |
JP4616165B2 true JP4616165B2 (en) | 2011-01-19 |
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JP2005372582A Expired - Fee Related JP4616165B2 (en) | 2005-12-26 | 2005-12-26 | Fuel supply pipe structure in the two fuel injection valve type throttle body |
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EP (1) | EP1801412B1 (en) |
JP (1) | JP4616165B2 (en) |
DE (1) | DE602006006783D1 (en) |
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JP5014227B2 (en) * | 2008-03-28 | 2012-08-29 | 本田技研工業株式会社 | Fuel distribution device for V-type engine |
JP5352567B2 (en) | 2009-11-10 | 2013-11-27 | 株式会社ミクニ | Fuel injection device |
JP5681420B2 (en) * | 2010-09-14 | 2015-03-11 | 株式会社ケーヒン | Engine fuel injector |
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JPH02259272A (en) * | 1989-03-30 | 1990-10-22 | Nippondenso Co Ltd | Fuel supplier device for engine |
JP2000145596A (en) * | 1998-11-06 | 2000-05-26 | Keihin Corp | Fuel injection valve in fuel injector for v-engine |
JP2000220551A (en) * | 1999-02-01 | 2000-08-08 | Keihin Corp | Attaching device for fuel injection valve in fuel injection device |
JP2002295343A (en) * | 2001-03-30 | 2002-10-09 | Honda Motor Co Ltd | Intake device for multi-cylinder internal combustion engine |
JP2002295271A (en) * | 2001-03-30 | 2002-10-09 | Honda Motor Co Ltd | Intake device of v-type internal combustion engine |
JP2002317738A (en) * | 2001-04-18 | 2002-10-31 | Honda Motor Co Ltd | Fuel injection device for internal combustion engine |
JP2004308536A (en) * | 2003-04-04 | 2004-11-04 | Honda Motor Co Ltd | Throttle valve opening control device and arrangement structure of the control device |
JP2005220875A (en) * | 2004-02-09 | 2005-08-18 | Keihin Corp | Mounting structure of fuel injection valve |
JP2005307866A (en) * | 2004-04-22 | 2005-11-04 | Keihin Corp | Fuel distribution pipe in multiple-throttle body |
JP2006242054A (en) * | 2005-03-02 | 2006-09-14 | Keihin Corp | Fuel supply pipe structure in throttle body provided with two fuel injection valve |
JP2006257984A (en) * | 2005-03-17 | 2006-09-28 | Keihin Corp | Fuel supply tube structure in multiple throttle bodies equipped with two fuel injection valves |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
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JP4077266B2 (en) * | 2002-07-30 | 2008-04-16 | ヤマハ発動機株式会社 | Fuel supply device for motorcycle engine |
-
2005
- 2005-12-26 JP JP2005372582A patent/JP4616165B2/en not_active Expired - Fee Related
-
2006
- 2006-11-21 DE DE200660006783 patent/DE602006006783D1/en active Active
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Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH02259272A (en) * | 1989-03-30 | 1990-10-22 | Nippondenso Co Ltd | Fuel supplier device for engine |
JP2000145596A (en) * | 1998-11-06 | 2000-05-26 | Keihin Corp | Fuel injection valve in fuel injector for v-engine |
JP2000220551A (en) * | 1999-02-01 | 2000-08-08 | Keihin Corp | Attaching device for fuel injection valve in fuel injection device |
JP2002295343A (en) * | 2001-03-30 | 2002-10-09 | Honda Motor Co Ltd | Intake device for multi-cylinder internal combustion engine |
JP2002295271A (en) * | 2001-03-30 | 2002-10-09 | Honda Motor Co Ltd | Intake device of v-type internal combustion engine |
JP2002317738A (en) * | 2001-04-18 | 2002-10-31 | Honda Motor Co Ltd | Fuel injection device for internal combustion engine |
JP2004308536A (en) * | 2003-04-04 | 2004-11-04 | Honda Motor Co Ltd | Throttle valve opening control device and arrangement structure of the control device |
JP2005220875A (en) * | 2004-02-09 | 2005-08-18 | Keihin Corp | Mounting structure of fuel injection valve |
JP2005307866A (en) * | 2004-04-22 | 2005-11-04 | Keihin Corp | Fuel distribution pipe in multiple-throttle body |
JP2006242054A (en) * | 2005-03-02 | 2006-09-14 | Keihin Corp | Fuel supply pipe structure in throttle body provided with two fuel injection valve |
JP2006257984A (en) * | 2005-03-17 | 2006-09-28 | Keihin Corp | Fuel supply tube structure in multiple throttle bodies equipped with two fuel injection valves |
Also Published As
Publication number | Publication date |
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EP1801412A2 (en) | 2007-06-27 |
JP2007170349A (en) | 2007-07-05 |
EP1801412A3 (en) | 2008-02-13 |
EP1801412B1 (en) | 2009-05-13 |
DE602006006783D1 (en) | 2009-06-25 |
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